// Constructor accepts the queue of customers from which to pull the next customer
// There are other ways to do this, but this makes part B less painful
public Teller(DurationQueue <Customer> q)
{
TotalCustomersInQueue = 0;
custQ = q;
}
public static void Main(string[] args)
{
// shortest time to service a customer; must be greater than zero
int MINIMUM_DURATION = 1;
// longest time to service a customer; must be greater than the minimum duration
int MAXIMUM_DURATION = 5;
// average customers arriving per given minute. This would mean three customers every four minutes.
double CUST_PER_MINUTE = 5;
// how long the simulation represents; 120 would equal two hours
int SIMULATION_DURATION = 120;
// The number of tellers for this run of the simulation
int NUM_TELLERS = 10;
int maxWaitTime = 0;
int maxIdleTime = 0;
double totalWaitTime = 0;
double totalIdleTime = 0;
double avgIdleTime = 0;
double avgWaitTime = 0;
int totalCustomersServed = 0;
int totalDuration = 0;
List <DurationQueue <Customer> > QList = new List <DurationQueue <Customer> >(NUM_TELLERS);
for (int i = 0; i < NUM_TELLERS; i++)
{
QList.Add(new DurationQueue <Customer>());
}
//represents queue with least amount of customers
DurationQueue <Customer> shortQueue = QList[0];
// Create the customer generator
CustomerGenerator frontdoor = new CustomerGenerator(MINIMUM_DURATION, MAXIMUM_DURATION, CUST_PER_MINUTE, SIMULATION_DURATION, 97);
List <Teller> tellers = new List <Teller>(NUM_TELLERS);
for (int i = 0; i < NUM_TELLERS; i++)
{
tellers.Add(new Teller(QList[i]));
}
for (int timeSlot = 0; timeSlot < SIMULATION_DURATION || Teller.TotalCustomersInQueue > 0; timeSlot++)
{
// get the queue of arriving customers from the frontdoor
foreach (DurationQueue <Customer> q in QList)
{
if (q.totalLineDuration < shortQueue.totalLineDuration)
{
shortQueue = q;
}
}
Queue <Customer> arrivals = frontdoor.GetCustomers(timeSlot);
while (arrivals.Count > 0)
{
Customer cust = arrivals.Dequeue();
shortQueue.Enqueue(cust);
shortQueue.totalLineDuration += cust.TransactionDuration;
Teller.TotalCustomersInQueue++;
}
foreach (Teller teller in tellers)
{
teller.ProcessNextCustomer(timeSlot);
}
totalDuration++;
}
Console.WriteLine("Minimum Duration: {0}", MINIMUM_DURATION);
Console.WriteLine("Maximum Duration: {0}", MAXIMUM_DURATION);
Console.WriteLine("Customer Per Minute: {0}", CUST_PER_MINUTE);
Console.WriteLine("Simulation Duration: {0}", SIMULATION_DURATION);
Console.WriteLine("Number of Tellers: {0}\n", NUM_TELLERS);
foreach (Teller teller in tellers)
{
totalCustomersServed += teller.CustomersServed;
if (maxWaitTime < teller.MaxWaitTime) //set highest customer wait time
{
maxWaitTime = teller.MaxWaitTime;
}
if (maxIdleTime < teller.IdleTime) //set higherst teller idle time
{
maxIdleTime = teller.IdleTime;
}
totalWaitTime += teller.TotalWaitTime; //add all wait times from line for all tellers for all customers
totalIdleTime += teller.IdleTime; //add all time idle for all tellers
}
avgWaitTime = totalWaitTime / totalCustomersServed; //calculate average wait time for customers
avgIdleTime = totalIdleTime / tellers.Count; //calculate average idle time for tellers
Console.WriteLine("Maximum Wait Time: {0}", maxWaitTime);
Console.WriteLine("Average Wait Time: {0:F}", avgWaitTime);
Console.WriteLine("Maximum Idle Time: {0}", maxIdleTime);
Console.WriteLine("Average Idle Time: {0:F}", avgIdleTime);
Console.WriteLine("Customers Served: {0}", totalCustomersServed);
Console.WriteLine("Total Duration: {0}", totalDuration);
Console.ReadKey();
}